The Phenomenon of Functional Shift Between Parts of Speech in Uzbek POS Tagging

This article analyzes one of the key linguistic problems arising in the process of automatic Part-of-Speech (POS) tagging of Uzbek language units, namely the phenomenon of functional shift between parts of speech. The agglutinative nature of the Uzbek language, the multifunctionality of verb forms, and their strong dependence on context are shown – through scientific examples, tables, and diagrams – to have a direct impact on POS tagging accuracy. The article discusses the linguistic causes of functional shift and explores ways of accounting for this phenomenon in automatic POS tagging models.